The standard letter formats which Swiss Post's machines are able to scan automatically in «Format Auto» will be forwarded to the scan centre. If a letter is not detected (e.g. because it is illegible, the address is incorrect, etc.), it will be delivered in physical form. Other mail types such as packages, magazines and newspaper will continue to be delivered in physical form.
Mail will not be redirected in the following cases:
- Mail thicker than 2.5cm
- Illegible writing
- Recipient's address does not completely match Swiss Post master data
- Recipient's address could not be read completely in the sorting office (e.g. content of window envelope slipped)
- c/o addresses used frequently (unless expressly allocated/ordered)
- Similar-sounding recipients at the same address